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On this day in space! Aug. 18, 1868: Total solar eclipse leads to discovery of helium

On this day in space! Aug. 18, 1868: Total solar eclipse leads to discovery of heliumWorldPing

On this day in space! Aug.18, 1868: Total solar eclipse leads to discovery of helium…

This is a short WorldPing brief. The full report was published by Space.com.

Read the full report at Space.com

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